Hi, I'm "Routebuilder", and I say that if you want to see the problems, right click the faulty asset, and click view errors and warnings. You will see what is wrong with it. Sometimes when I clicked on "view errrors and warnings, there were no errors. Try that. However, it will not always show it as no errors. And even when there are no errors, it may not show. And that is because it may have a faulty dependencies. Don't do a database repair, because that just wastes time. In reply to ARES. By the way, if those locos don't work, wait a while to view the errors and warnings, and if it says no errors, open it for edit, and don't commit them.